A good way to Learn CSS

Ok, we're back to geek stuff, but this is worth it for people who are not savvy at web design and want to be. I just learned about this cool site called css Zen Garden (it has a google pagerank of 8 [extremely popular], so I may be the last human on earth to find it. but just in case I'm not...) that seems to be a great way to learn css by example. So if you're one of the eleven or so people left on the planet that doesn't visit the site, now you know about it. :-)